Disable TR-069 not working for JCO4032_R2.57

[DHANOLA]

I tried changing the lines for /flash/teamf1.cfg.ascii, /flash/teamf1.cfg.ascii.bkp but after saving file and rebooting the router, the router started showing red light long blink (with an interval of 15 second between each blink). This method is not working for me and due to this the router does not started, and I had to reset my router after which settings restored to default.

[Naitik1208]

Yes the new firmwares have some requirement of TR069 enabled they are dependent on it so I can't do anything in this. Even my router bricked on newer firmwares.